doc: clarify the operation of wc -L

* src/wc.c (usage): State that it calculates display width.
* doc/coreutils.texi (wc invocation): Detail the distinct
items used to determine the display width.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/wc.c b/src/wc.c
index ae7ae952d..eb7b5b69a 100644
--- a/src/wc.c
+++ b/src/wc.c
@@ -134,7 +134,7 @@ the following order: newline, word, character, byte, maximum line length.\n\
       --files0-from=F    read input from the files specified by\n\
                            NUL-terminated names in file F;\n\
                            If F is - then read names from standard input\n\
-  -L, --max-line-length  print the length of the longest line\n\
+  -L, --max-line-length  print the maximum display width\n\
   -w, --words            print the word counts\n\
 "), stdout);
       fputs (HELP_OPTION_DESCRIPTION, stdout);